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CONTINUOUS PROCESS FOR PRODUCING POLY(TRIMETHYLENE TEREPHTHALATE).

时间：2022-11-12 18:20:22 下载该word文档

CONTINUOUSPROCESSFORPRODUCINGPOLY(TRIMETHYLENETEREPHTHALATE.申请(专利号：MX2002PA07740专利号：MXPA02007740A主分类号：C08F2/00申请权利人：E.I.DUPONTDENEMOURSANDCOMPANY公开国代码：MX优先权国家：US摘要：Acontinuousprocessfortheproductionofpoly(trimethyleneterephthalateisdisclosed.Accordingtotheprocess,aliquidfeedmixturecomprisingbis3hydroxypropylterephthalateandorlowmolecularweightpolyestersof1,3propanediolandterephthalicacid,theliquidfeedmixturehavingamoleratioofpropylenegroupstoterephthalategroupsof1.1to2.2isfedtoaflasher.Afirststreamofgaseousbyproductsiscontinuouslyvaporizedandremovedfromtheflasher,andaliquidflasherreactionproducthavingamoleratioofpropylenegroupstoterephthalategroupsoflessthanabout1.5iscontinuouslywithdrawnfromtheflasher.Theliquidflasherreactionproductiscontinuouslyfedtoaprepolymerizerwhereitiscontinuouslypolymerizedtoformapoly(trimethylene申请日：2000-08-10公开公告日：2002-10-23分类号：C08F2/00;C08G63/183;C08G63/78发明设计人：HO,CHUNGFAH,HOWARD申请国代码：MX优先权：20000211US50264200;20000810US0021779摘要附图：
terephthalateprepolymerandasecondstreamofgaseousbyproducts.Poly(trimethyleneterephthalateprepolymerhavingarelativeviscosityofatleastabout5iscontinuouslywithdrawnfromtheprepolymerizerandcontinuouslyfedtoafinalpolymerizer,whereitiscontinuouslypolymerizedtoformahighermolecularweightpoly(trimethyleneterephthalateandathirdstreamofgaseousbyproducts.Highermolecularweightpoly(trimethyleneterephthalatehavingarelativeviscosityofatleastabout17iscontinuouslywithdrawnfromthefinalpolymerizer.主权项：
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